EP 2491232 B1 20131225 - METHOD FOR DETECTING MECHANICAL FAILURE IN A NITROGEN OXIDE TREATMENT SYSTEM
Title (en)
METHOD FOR DETECTING MECHANICAL FAILURE IN A NITROGEN OXIDE TREATMENT SYSTEM
Title (de)
VERFAHREN ZUR DETEKTION EINER MECHANISCHEN STÖRUNG IN EINEM STICKOXIDBEHANDLUNGSSYSTEM
Title (fr)
PROCEDE DE DETECTION DE DEFAILLANCE D'UN SYSTEME DE TRAITEMENT D'OXYDES D'AZOTE
Publication
Application
Priority
- FR 0957309 A 20091019
- FR 2010051954 W 20100920
Abstract (en)
[origin: WO2011048293A1] The invention relates to a method for detecting mechanical failure in a system (10) for treating nitrogen oxides (NOx) produced by a heat engine, said method comprising: for a reference operating cycle, defining a reference difference (?OBD) between a maximum value (Q0 amont), for the amount of nitrogen oxides produced upstream of the system (10), and a threshold (SOBD) for the amount of nitrogen oxides emitted downstream of the system (10); in an operation phase, calculating an amount (QSCR) of treated nitrogen oxides as the difference between the amount (Qamont) of nitrogen oxides produced and the amount (Qaval) of nitrogen oxides emitted downstream of the system; comparing said amount (Qaval) of nitrogen oxides, emitted downstream of said threshold (SOBD), and the reference difference with the amount (QSCR) of treated nitrogen oxides; and concluding, during a mechanical failure of the treatment system, if both comparisons are simultaneously positive.
IPC 8 full level
F01N 11/00 (2006.01)
CPC (source: EP)
F01N 11/00 (2013.01); F01N 2550/02 (2013.01); F01N 2560/026 (2013.01); Y02T 10/40 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
FR 2951498 A1 20110422; FR 2951498 B1 20111104; BR 112012009076 A2 20160426; CN 102667091 A 20120912; CN 102667091 B 20140917; EP 2491232 A1 20120829; EP 2491232 B1 20131225; ES 2443871 T3 20140220; WO 2011048293 A1 20110428
DOCDB simple family (application)
FR 0957309 A 20091019; BR 112012009076 A 20100920; CN 201080047358 A 20100920; EP 10770594 A 20100920; ES 10770594 T 20100920; FR 2010051954 W 20100920